data_global _amcsd_formula_title 'Cl H4 N O2' loop_ _publ_author_name 'Levi G' 'Scherillo A' _journal_name_full 'Zeitschrift fur Kristallographie' _journal_volume 76 _journal_year 1931 _journal_page_first 431 _journal_page_last 452 _publ_section_title ; Ricerche cristallografiche sui sali dell acido cloroso _cod_database_code 1010621 ; _database_code_amcsd 0017503 _chemical_formula_sum 'N Cl' _cell_length_a 6.3 _cell_length_b 6.3 _cell_length_c 6.3 _cell_angle_alpha 90 _cell_angle_beta 90 _cell_angle_gamma 90 _cell_volume 250.047 _exptl_crystal_density_diffrn 0.657 _symmetry_space_group_name_H-M 'P 4 b m' loop_ _space_group_symop_operation_xyz 'x,y,z' '1/2-y,1/2-x,z' '-y,x,z' '1/2+x,1/2-y,z' '-x,-y,z' '1/2+y,1/2+x,z' 'y,-x,z' '1/2-x,1/2+y,z' loop_ _atom_site_label _atom_site_fract_x _atom_site_fract_y _atom_site_fract_z N1 0.00000 0.00000 0.00000 Cl1 0.50000 0.00000 0.25000